docs: def update_locals(locals_instance, instance_iterator, *args, **kwargs):
      """import all of the detector classes into the local namespace to make it
      easy to do things like `import scrubadub.detectors.NameDetector` without
      having to add each new ``Detector`` or ``Filth``
      """
      # http://stackoverflow.com/a/4526709/564709
      # http://stackoverflow.com/a/511059/564709
      for instance in instance_iterator():
          locals_instance.update({type(instance).__name__: instance.__class__})